| A | B |
| Force | a push or a pull |
| Pound | the English unit for force. Abbreviated "lb." |
| Newton | the SI* unit for force. Abbreviated "N" |
| Balanced force | equal force on both sides |
| Unbalanced force | unequal force. One force overcomes the other |
| Net force | the left over force when the force is unbalanced |
| Equilibrium | the result of balanced forces |
| Scalar value | physical quantities in nature that are described only by a magnitude |
| Vector | each physical quantity in nature that's described by a magnitude and a direction |
| magnitude | strength |
| Mass | total amount of matter contained in an object |
| Weight | a measure of the earth's gravitational pull |
| Gravity | how hard the earth is pulling objects toward its center |
| Linear vs. Rotational | straight line vs. rotating |
| Torque | a forcelike quantity in the rotational mechanical system |
| T=F * L | Torque equals applied force times lever arm |
| Axis of rotation | point of rotation |
| Lever arm | the handle |
| 1 kilogram | 9.8 newtons |